Installation of the Thrust Reverser Cowl Doors [CFML]

TASK 78-32-11-400-803-A
Installation of the Thrust Reverser Cowl Doors

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

WARNING: BEFORE YOU INSTALL/REMOVE THE GSE TOOL, READ THE MANUFACTURER'S INSTRUCTIONS, AND, WHILE YOU OPERATE THIS TOOL, CAREFULLY OBEY THEM. IF YOU DO NOT DO THIS, INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.

CAUTION: THIS PART IS A REMOVABLE STRUCTURAL COMPONENT (RSC), WHICH CAN BE MOVED BETWEEN AIRCRAFT. THUS IT CAN HAVE DIFFERENT OPERATION CONDITIONS AND A DIFFERENT LIFE RECORD (FLIGHT HOURS/FLIGHT CYCLES/CALENDAR) FROM THE AIRCRAFT IT IS INSTALLED ON OR REMOVED FROM. THE OPERATOR IS RESPONSIBLE FOR THE SPECIFIC TRACKING AND CONTINUED AIRWORTHINESS OF REMOVABLE STRUCTURAL COMPONENTS. INCORRECT MAINTENANCE OF THESE COMPONENTS CAN CAUSE A RISK FOR THE FLIGHT SAFETY.

ZONE: 210
ZONE: 400

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	AR	CAP - BLANKING
No specific	1	CRANE 1000KG (2200 LB)
No specific	1	MALLET - SOFT FACE
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 3.62 and 2.82 m.daN (26.70 and 20.80 lbf.ft )
No specific	Torque wrench: range to between 6.21 and 5.31 m.daN (45.80 and 39.16 lbf.ft )
98N7830H002-000	1	THRUST REVERSER DOLLY
98N7830H022-000	1	THRUST REVERSER HOISTING FRAME 2
98N7830H028-000	1	THRUST REVERSER HINGE BOLT BULLETS

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
9	COTTER PIN	AIPC 78-30-16-11-010
13	COTTER PIN	AIPC 78-30-16-11-050
17	COTTER PIN	AIPC 78-30-16-11-050
21	COTTER PIN	AIPC 78-30-16-11-050

D. Referenced Information

REFERENCE	DESIGNATION
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 71-13-11-000-806-A	Removal of the Fan Cowl Doors
TASK 71-13-11-400-806-A	Installation of the Fan Cowl Doors
TASK 71-13-11-820-802-A	Adjustment of the Fan Cowl Doors Clearance
TASK 71-13-13-820-801-A	Adjustment of the Fan Cowl Door Latches
TASK 73-29-00-740-804-A	Thrust Reverser Cycling Test (Menu Mode)
TASK 78-30-00-040-807-A	Deactivation of the Thrust Reverser System for Nacelle Maintenance (ICU)
TASK 78-30-00-440-807-A	Reactivation of the Thrust Reverser System after Nacelle Maintenance (ICU)
TASK 78-31-41-820-801-A	Synchronize the Thrust Reverser Actuators
TASK 78-32-11-820-801-A	Adjustment of the Thrust Reverser Cowl Doors Clearance
TASK 78-32-43-000-806-A	Removal of the Thrust Reverser Cascades
TASK 78-32-43-400-806-A	Installation of the Thrust Reverser Cascades
TASK 78-36-41-820-802-A	Adjustment of the Thrust Reverser Cowl Latch Tension
TASK 78-36-45-400-801-A	Installation of the Thrust Reverser Hinge Access Panels
TASK 78-36-51-400-802-A	Installation of the Thrust Reverser Cowl Opening System
Thrust Reverser Cowl Doors - (PRE SPOL BD-TR-17026)
Thrust Reverser Cowl Doors - (POST SPOL BD-TR-17026)

3. Job Set-up
Subtask 78-32-11-941-067-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Make sure that the WARNING NOTICE(S) are in position to tell persons not to operate:

The ENG/MODE selector switch, and
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Make sure that the WARNING NOTICE(S) is in position to tell persons not to energize FADEC 1(2).

Subtask 78-32-11-865-059-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 78-32-11-864-056-A

C. Depressurization of the Hydraulic Reservoirs

WARNING: FAILURE TO SHUT OFF AIRCRAFT HYDRAULIC SUPPLY TO THRUST REVERSER CAN RESULT IN SERIOUS INJURY TO PERSONNEL.

(1) For 4020KM1:
(a) Make sure that the Green hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).
(2) For 4020KM2:
(a) Make sure that the Yellow hydraulic reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001).

Subtask 78-32-11-010-085-A

D. Get Access
(1) Make sure that the fan cowl doors are open (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR.
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR.
(2) Make sure that the ACCESS PLATFORM 2M (6 FT) is in position.

Subtask 78-32-11-040-070-A

E. Deactivation of the Thrust Reverser System for Nacelle Maintenance

WARNING: YOU MUST DEACTIVATE THE THRUST REVERSER BEFORE YOU DO WORK ON OR AROUND IT. IF YOU DO NOT, THE THRUST REVERSER CAN OPERATE ACCIDENTALLY AND CAUSE AN INJURY AND/OR DAMAGE.

(1) Make sure that you did the deactivation of the thrust reverser system for nacelle maintenance (Ref. AMM TASK 78-30-00-040-807).

Subtask 78-32-11-010-087-A

F. Make sure that you removed the inner fan cowl door (Ref. AMM TASK 71-13-11-000-806).

NOTE: The removal of the inner fan cowl door is necessary only for the removal of the inner thrust reverser cowl.

4. Procedure

WARNING: DO THE STEPS THAT FOLLOW IN THE SEQUENCE GIVEN. IF YOU DO NOT OBEY THIS INSTRUCTION, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

CAUTION: MAKE SURE THAT THE CASCADE CONFIGURATION IS THE SAME AS ON THE ENGINE POSITION FOR THE THRUST-REVERSER HALF INSTALLATION. REFER TO THE CASCADE CONFIGURATION PLATE INSTALLED ON THE FORWARD FRAME. IF IT IS NOT THE SAME, PUT THE CASCADES IN POSITION AGAIN TO GET A CORRECT FLOW. IF YOU DO NOT OBEY THESE INSTRUCTIONS, YOU CAN CAUSE DAMAGE TO EQUIPMENT.

NOTE: Each half thrust reverser weighs approximately 573 lb (260 kg).

NOTE: Minimum three mechanics are necessary to install the TRU cowl door. One mechanic on the pylon, one mechanic to guide the TRU cowl door from the ground and one mechanic to operate the hoist.

Subtask 78-32-11-420-060-A

A. Installation of the Left Thrust Reverser Cowl Doors
(1) Make sure that the cascades are installed:

NOTE: As cascade configuration are different from Engine 1 and Engine 2 (for reverse aero flow reasons), thrust reversers spare, repair or leases units are never delivered with cascades installed.

(a) If not installed, install the cascades (Ref. AMM TASK 78-32-43-400-806).
(b) If already installed, examine the cascade configuration:

NOTE: The cascade configuration is different on Engine 1 and Engine 2. Refer to AIPC section 78-32-80 for each engine configuration.

1 If the configuration is incorrect, remove the cascades (Ref. AMM TASK 78-32-43-000-806) and install the correct cascade configuration (Ref. AMM TASK 78-32-43-400-806).
2 If the configuration is correct, go to the next step.
(2) Installation of the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) on the thrust reverser cowl:

CAUTION: FOR USE ON AN INBOARD COWL, MAKE SURE THAT YOU DO THE CORRECT GSE ASSEMBLY TO PREVENT INTERFERENCE WITH THE AIRCRAFT WING. READ THE INSTRUCTIONS IN THE APPLICABLE GSE INSTRUCTION MANUAL. DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE THRUST REVERSER STRUCTURE.

(a) Make sure that the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) is well assembled and well equipped for the side of the half thrust reverser cowl to be installed. Refer to GSE notice.
(b) Connect and tighten the hoist fittings (27) on the thrust reverser cowl hoisting point at the 6 o'clock beam (29) and the 12 o'clock beam (28).
(c) Carefully move the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) near the 98N7830H002-000 THRUST REVERSER DOLLY area.
(d) Connect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) on the hoisting fittings (27) at the 6 o'clock beam (29). Refer to GSE notice.
(e) Connect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) on the hoisting fittings (27) at the 12 o'clock beam (28). Refer to GSE notice.
(3) Install the thrust reverser cowl on the pylon (8):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE PYLON, WING OR ENGINE DURING THIS OPERATION.

(a) Disconnect the half thrust reverser from the 98N7830H002-000 THRUST REVERSER DOLLY. Refer to GSE notice.
(b) Clean the hinges of the beam, pylon and hinge pins.
(c) Use the CRANE 1000KG (2200 LB) to put in tension the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) to remove the half thrust reverser from the 98N7830H002-000 THRUST REVERSER DOLLY.
(d) Rotate the half thrust reverser with the chain hoist until the strap is unloaded.

NOTE: When the strap is unloaded the half thrust reverser is opened at approximately an angle of 10 degrees from the closed position, and the load scale indicates approximately 410 kg (903.90 lb).

(e) Carefully move the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) with thrust reverser cowl near the 12 o'clock pylon hinges.

CAUTION: MAKE SURE THAT THE FORWARD FRAME J-RING IS CORRECTLY ENGAGED IN THE ENGINE V-GROOVE. IF IT IS NOT, DAMAGE TO THE EQUIPMENT CAN OCCUR.

(f) Align the thrust reverser cowl hinge beams with the hinge fittings on the pylon (8) and engage the forward frame J-ring on the engine V-groove.

NOTE: To adjust the alignment of the hinge pin R3 and R4, you can use the trapezoidal screw (37) on the hoisting frame. Refer to GSE notice.

(4) Installation of the thrust reverser cowl hinge pins R4 (22) and R3 (18):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE ADJACENT STRUCTURE AND HINGE PINS DURING THIS OPERATION.

(a) Install the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) on hinge pins R4 (22) and R3 (18), if removed.
(b) Use MALLET - SOFT FACE to install the hinge pins:
1 Install hinge pin R3 (18) on the hinge.
2 Install hinge pin R4 (22) on the hinge.
(c) Remove the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) from the hinge pins R4 (22) and R3 (18).
(d) Install the washer (20) and hinge nut (19) on the hinge pin R3 (18).
(e) Install the washer (24) and hinge nut (23) on the hinge pin R4 (22).
(5) Close the thrust reverser cowl with the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26):
(a) Close the thrust reverser cowl with the use of chain hoist.
(6) Remove the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the thrust reverser cowl:
(a) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the hoisting fitting (27) on the thrust reverser cowl hoisting point at the 12 o'clock beam (28).
(b) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the hoisting fitting (27) on the thrust reverser cowl hoisting point at the 6 o'clock beam (29).
(c) Move the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) with the CRANE 1000KG (2200 LB) from the thrust reverser cowl area.
(d) Disconnect the hoisting fitting (27) from the thrust reverser cowl hoisting point at the 12 o'clock beam (28) and the 6 o'clock beam (29).

POST SPOL BD-TR-17026
(7) Install the plug (40) on the 6 o'clock beam (29).

END OF POST SPOL BD-TR-17026
(8) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the CRANE 1000KG (2200 LB):
(a) Carefully tilt the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the vertical to horizontal position. Refer to GSE notice.
(b) Carefully pull down the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) in its storage box. Refer to GSE notice.
(c) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the CRANE 1000KG (2200 LB). Refer to GSE notice.
(9) Installation of the thrust reverser cowl hinge pins R2 (14) and R1 (10):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE ADJACENT STRUCTURE AND HINGE PINS DURING THIS OPERATION.

(a) Install the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) on hinge pins R2 (14) and R1 (10), if removed.
(b) Use the MALLET - SOFT FACE to install the hinge pins:
1 Install the hinge pin R2 (14) on the hinge.
2 Install the hinge pin R1 (10) on the hinge.
(c) Remove the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) from the hinge pins R2 (14) and R1 (10).
(d) Install the washer (16) and hinge nut (15) on the hinge pin R2 (14).
(e) Install the washer (12) and hinge nut (11) on the hinge pin R1 (10).
(10) Tightening of the hinge nuts:

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

(a) Tighten the hinge nuts (11), (15), (19) and (23):
1 Apply a tightening torque necessary to the handling of the hinge nut to obtain an axis/yoke assembly without end play.

NOTE: You can tighten the hinge nut of 1/6 of a turn maximum to install the new cotter pin.

(b) Install the new AIPC 78-30-16-11-050 COTTER PIN (21) on hinge pin R4 (22).
(c) Install the new AIPC 78-30-16-11-050 COTTER PIN (17) on hinge pin R3 (18).
(d) Install the new AIPC 78-30-16-11-050 COTTER PIN (13) on hinge pin R2 (14).
(e) Install the new AIPC 78-30-16-11-010 COTTER PIN (9) on hinge pin R1 (10).
(11) Install the thrust reverser cowl opening actuator (7) (Ref. AMM TASK 78-36-51-400-802).
(12) Connection of the electrical harness connectors for the thrust reverser cowl installation:

CAUTION: MAKE SURE THAT:

YOU DO NOT CROSS CONNECT THE ELECTRICAL HARNESSES
YOU CONNECT THE ELECTRICAL HARNESSES TO THE CORRECT CONNECTORS.

IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Connection of the electrical harness (33), (34), (35) and (36) connectors for the left thrust reverser cowl installation:
1 Release the electrical harness (33), (34), (35) and (36) from the pylon (8).
2 Remove CAP - BLANKING on the harness connectors, disconnect bracket (32) and DCU (31).
3 Connect the electrical harness (35) and (36) connectors to the disconnect bracket (32) (on engine).
4 Connect the electrical harness (33) and (34) connectors to the DCU (31).
(13) Connection of the hydraulic hoses (5) on the thrust reverser cowl:

NOTE: Each time TRIPLE TORQUE is required act as follows:
1. TORQUE the connection to required torque value.
2. Loosen the connection and TORQUE it to required torque value a second time.
3. TORQUE the connection to required torque value a third time:

(a) Remove the PLUG - BLANKING from the actuator side and hose side.

CAUTION: WHEN YOU INSTALL THE FLEX HOSES, USE A SECOND WRENCH TO APPLY COUNTER TORQUE TO THE ANTI ROTATION DEVICES OF THE HOSES. IF THE HOSES HAVE BENDS, MAKE SURE THAT, AFTER INSTALLATION, THE BENDS ARE IN THE VERTICAL POSITION AND THAT THERE IS NO TORSION IN THE HOSES. IF YOU DO NOT OBEY THESE INSTRUCTIONS, DAMAGE TO THE FLEX HOSES CAN OCCUR.

(b) Connect the two hydraulic hoses (5).
(c) TRIPLE TORQUE the connectors (39) of the hydraulic hoses (5) to between 6.21 and 5.31 m.daN (45.80 and 39.16 lbf.ft )

.
(14) Do the connection of the OTT sync tube (1) and synchronization of the thrust reverser actuators (Ref. AMM TASK 78-31-41-820-801).
(15) Do the adjustment of the thrust reverser cowl doors clearance (Ref. AMM TASK 78-32-11-820-801).

CAUTION: MAKE SURE THAT THE THRUST REVERSER COWL DOORS ARE CORRECTLY ADJUSTED. IF THEY ARE NOT, DAMAGE TO THE COWL DOORS CAN OCCUR.

(16) Do the adjustment of the thrust reverser cowl latches (Ref. AMM TASK 78-36-41-820-802).
(17) Install the hinge access panel (Ref. AMM TASK 78-36-45-400-801).

Subtask 78-32-11-420-064-A

B. Installation of the Right Thrust Reverser Cowl Doors
(1) Install the cascades on the thrust reverser cowls, if removed (Ref. AMM TASK 78-32-43-400-806).
(2) Installation of the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) on the thrust reverser cowl.

CAUTION: MAKE SURE THAT:

YOU DO NOT CROSS CONNECT THE ELECTRICAL HARNESSES
YOU CONNECT THE ELECTRICAL HARNESSES TO THE CORRECT CONNECTORS.

IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE TO EQUIPMENT CAN OCCUR.

(a) Disconnect the half TR from the 98N7830H002-000 THRUST REVERSER DOLLY. Refer to GSE notice.
(b) Clean the hinges of the beam, pylon and hinge pins.
(c) Use the CRANE 1000KG (2200 LB) to put in tension the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) to remove the half TR from the 98N7830H002-000 THRUST REVERSER DOLLY.
(d) Rotate the half TR with the chain hoist until the strap is unloaded.

NOTE: When the strap is unloaded the half TR is opened at approximately an angle of 10° from the closed position, and the load scale indicates approximately 410 kg (903.90 lb).

(e) Carefully move the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) with thrust reverser cowl near the 12 o'clock pylon hinges.
(f) Install the J-ring:

CAUTION: MAKE SURE THAT THE FORWARD FRAME J-RING IS CORRECTLY ENGAGED IN THE ENGINE V-GROOVE. IF IT IS NOT, DAMAGE TO THE EQUIPMENT CAN OCCUR.

1 Align the thrust reverser cowl hinge beams with the hinge fittings on the pylon (8) and engage the forward frame J-ring on the engine V-groove.

NOTE: To adjust the alignment of the hinge pin R3 and R4, you can use the trapezoidal screw (37) on the hoisting frame. Refer to GSE notice.

(4) Installation of the thrust reverser cowl hinge pins R4 (22) and R3 (18):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE ADJACENT STRUCTURE AND HINGE PINS DURING THIS OPERATION.

(a) Install the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) on hinge pins R4 (22) and R3 (18), if removed.
(b) Use MALLET - SOFT FACE to install the hinge pins:
1 Install hinge pin R3 (18) on the hinge.
2 Install hinge pin R4 (22) on the hinge.
(c) Remove the 98N7830H028-000 THRUST REVERSER HINGE BOLT BULLETS (25) from the hinge pins R4 (22) and R3 (18).
(d) Install the washer (20) and hinge nut (19) on the hinge pin R3 (18).
(e) Install the washer (24) and hinge nut (23) on the hinge pin R4 (22).
(5) Close the thrust reverser cowl with the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26):
(a) Close the thrust reverser cowl with the use of chain hoist.
(6) Remove the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the thrust reverser cowl:
(a) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the hoisting fitting (27) on the thrust reverser cowl hoisting point at the 12 o'clock beam (28).
(b) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the hoisting fitting (27) on the thrust reverser cowl hoisting point at the 6 o'clock beam (29).
(c) Move the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) with the CRANE 1000KG (2200 LB) from the thrust reverser cowl area.
(d) Disconnect the hoisting fitting (27) from the thrust reverser cowl hoisting point at the 12 o'clock beam (28) and the 6 o'clock beam (29).
(7) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the CRANE 1000KG (2200 LB):
(a) Carefully tilt the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the vertical to horizontal position. Refer to GSE notice.
(b) Carefully pull down the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) in its storage box. Refer to GSE notice.
(c) Disconnect the 98N7830H022-000 THRUST REVERSER HOISTING FRAME 2 (26) from the CRANE 1000KG (2200 LB). Refer to GSE notice.
(8) Installation of the thrust reverser cowl hinge pins R2 (14) and R1 (10):

CAUTION: BE CAREFUL NOT TO CAUSE DAMAGE TO THE ADJACENT STRUCTURE AND HINGE PINS DURING THIS OPERATION.

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

(a) Tighten the hinge nuts (11), (15), (19) and (23):
1 Apply a tightening torque necessary for the nut without an end play, loosen the nut maximum up to 1/6 turn to align the pin hole with the nut.
(b) Install the new AIPC 78-30-16-11-050 COTTER PIN (21) on hinge pin R4 (22).
(c) Install the new AIPC 78-30-16-11-050 COTTER PIN (17) on hinge pin R3 (18).
(d) Install the new AIPC 78-30-16-11-050 COTTER PIN (13) on hinge pin R2 (14).
(e) Install the new AIPC 78-30-16-11-010 COTTER PIN (9) on hinge pin R1 (10).
(10) Install the thrust reverser cowl opening actuator (7) (Ref. AMM TASK 78-36-51-400-802).
(11) Connection of the electrical harness connectors for the thrust reverser cowl installation:
(a) Connection of the electrical harness (6) for the right thrust reverser cowl removal:
1 Release the electrical harness (6) from the forward frame.
2 Remove CAP - BLANKING on the harness connectors and disconnect plate connectors.
3 Connect the electrical harness connectors on electrical disconnect plate (30).
(12) Connection of the hydraulic hoses (4) and (5) on the thrust reverser cowl:

(a) Remove the PLUG - BLANKING from the actuator side and hose side.

(b) Connect the two hydraulic hoses (4) and (5).
(c) TRIPLE TORQUE the connector (38) of the hydraulic hose (4) to between 3.62 and 2.82 m.daN (26.70 and 20.80 lbf.ft )

.
(d) TRIPLE TORQUE the connector (39) of the hydraulic hose (5) to between 6.21 and 5.31 m.daN (45.80 and 39.16 lbf.ft )

.
(13) Do the connection of the OTT sync tube (1) and synchronization of the thrust reverser actuators (Ref. AMM TASK 78-31-41-820-801).
(14) Do the adjustment of the thrust reverser cowl doors clearance (Ref. AMM TASK 78-32-11-820-801).

CAUTION: MAKE SURE THAT THE THRUST REVERSER COWL DOORS ARE CORRECTLY ADJUSTED. IF THEY ARE NOT, DAMAGE TO THE COWL DOORS CAN OCCUR.

(15) Do the adjustment of the thrust reverser cowl latches (Ref. AMM TASK 78-36-41-820-802).
(16) Install the hinge access panel (Ref. AMM TASK 78-36-45-400-801).

5. Close-up
Subtask 78-32-11-820-060-A

A. Adjustment of the fan cowl door
(1) Do the adjustment of the fan cowl door clearance (Ref. AMM TASK 71-13-11-820-802)

CAUTION: MAKE SURE THAT THE FAN COWL DOORS ARE CORRECTLY ADJUSTED. IF THEY ARE NOT, DAMAGE TO THE COWL DOORS CAN OCCUR.

(2) Do the adjustment of the fan cowl door latches (Ref. AMM TASK 71-13-13-820-801)

Subtask 78-32-11-440-060-A

B. Do the reactivation of the thrust reverser after nacelle maintenance (Ref. AMM TASK 78-30-00-440-807).

Subtask 78-32-11-863-050-A

C. Pressurization of the Hydraulic Reservoirs
(1) FOR 4020KM1:
(a) Pressurize the Green hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).
(2) For 4020KM2:
(a) Pressurize the Yellow hydraulic reservoir (Ref. AMM TASK 29-14-00-614-002).

Subtask 78-32-11-865-061-A

D. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	HYDRAULIC/HYD POWER/Y	3803GX	N31
123VU	Y HYD/ELEC/PUMP	3802GX	AB06
123VU	Y HYD/ELEC/ELEC PUMP/NORM	3801GX	AB03

Subtask 78-32-11-210-058-A

E. Test
(1) Do the Cycling of the thrust reverser with the MCDU (Ref. AMM TASK 73-29-00-740-804)
(2) Open the fan cowl doors and examine the hydraulic connections for leaks after the cycling tests.

Subtask 78-32-11-410-077-A

F. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the inner fan cowl door (Ref. AMM TASK 71-13-11-400-806).
(3) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(4) Remove the access platform(s).
(5) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:35:56 UTC